When the mainstream come on board and recognise the benefits of decentralised currency, they'll also recognise the ideology that made it work and want to defend that.  They'll know by then that printing masses of fiat money out of thin air by banks and governments was just a con.  The only ones to see any benefit from the creation of fiat money were the ones reaping all the interest because the money was, in reality, just debt.  A continuous loop of theft to transfer wealth from the bottom to the top.  They won't want to go back to that once they've seen the light.